Core
External Oblique
Musculus obliquus externus abdominis

The oblique muscle forming the side wall of the abdomen; rotates the trunk and bends it sideways.
- Function
- Trunk rotation and lateral flexion.
- Origin
- External surface of ribs 5–12.
- Insertion
- Linea alba and the iliac crest.
How this muscle is trained
External Oblique is worked as the primary target in 1 of the 4 exercises listed here, and as a supporting muscle in the rest. The equipment those exercises use: Bodyweight.